folderBrowserDialog does not work in c#

Question

when i click on the button to select a folder using folderBrowserDialog in c# the dialog is not shown and the result of dialog is set to Cancel automatically ..here is the code behind Button_Click :

private void glassButton1_Click(object sender, EventArgs e)
{
    DialogResult result = folderBrowserDialog1.ShowDialog();//here Dialog is not shown and result=Cancel
    if (result==DialogResult.OK)
    {
        folderBrowserDialog1.ShowNewFolderButton = true;
        backupPath = folderBrowserDialog1.SelectedPath.ToString();
        if (Directory.Exists(backupPath))
            backupTextBox.Text = backupPath;
        //else MessageBox.Show("path is invalid", "error", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
    }
}

how can i fix it ? thanks .

Is it drag and drop? Or did you create folderBrowserDialog in your own? — Berkay Yaylacı, Aug 20 '16 at 10:30
Where is the code created that created the `folderBrowserDialog1` — Matthew Whited, Aug 20 '16 at 11:07
and fyi, the line `folderBrowserDialog1.ShowNewFolderButton = true;` is set after the dialog closed. — Matthew Whited, Aug 20 '16 at 11:09

score 3 · Answer 1 · answered May 13 '22 at 12:17

3

Add STAThread Attribute to the main method.

static class Program
{
    [STAThread]
    static void Main(string[] args)
    {
        ...        
    }
}

answered May 13 '22 at 12:17

Naresh Bisht

645
6
16

score 1 · Answer 2 · answered Aug 20 '16 at 11:04

1

Here's the code, it works fine for me.

using (var dialog = new FolderBrowserDialog())
    if (dialog.ShowDialog() == DialogResult.OK)
    {
         // some code...
    }

answered Aug 20 '16 at 11:04

Sleepy Panda

458
3
9

score 0 · Answer 3 · answered Aug 20 '16 at 12:18

0

You code works correctly. result is DialogResult.OK when you click FolderBrowserDialog "OK Button". if you click "cancel" or "close" button when result value setting is DialogResult.Cancel

answered Aug 20 '16 at 12:18

Valeh Mikayilzadeh

813
7
18

score 0 · Answer 4 · answered Aug 20 '16 at 12:22

0

from project properties -> build section -> platform target , i checked Prefer 32-bit checkBox and it solved my problem .

answered Aug 20 '16 at 12:22

ako

2,000
2
28
34

i think the problem is someways related to the **COM** components , as folderBrowserDialog is a component from COM technology, but i don't know what the problem was with that . – ako Aug 20 '16 at 12:23

folderBrowserDialog does not work in c#

4 Answers4